Lect 11 - CNS (Cranial Meninges and Circulation) Flashcards
What is the Dura Mater
The outer layer of The Cranial Meninges
What are the two layers of the Dura Mater
Periosteal Cranial Dura (Outer)
Meaningeal Cranial Dura (Inner)
The space between the two Dura Mater layers contains?
Dural Sinuses (Large Veins)
In the Dura Mater what do the Dural Septae separate and form
Falx Cerebri
Tentorium Cerebelli
Falx Cerebelli
Diaphragma Sellae
What is the Falx Cerebri? What does it contain?
A meningeal layer that covers the brain, extends into the longitudinal fissure
Superior Sagittal Sinus
Inferior Sagittal Sinu
The anterior portion of the Falx cerebri attaches to
Crista Galli
The posterior portion of the Falx cerebri attaches to
Tentorium cerebelli
What is the Tentorium Cerebelli
Separates cerebellar hemisphere with cerebral hemisphere
Occipital lobe of cerebrum and cerebellum
are separated
Contains Transverse Sinus
What is the Falx Cerebelli
Contains the Occipital Sinu
Separates the Cerebellar Hemispheres
What is the Diaphragma Sellae
Anchors Dura Mater to Sphenoid Bone
Encases Pituitary Gland (Separates it from the bone)
What are Dural Venous Sinuses
Channels in between Dura Mater layers
Act like veins
Contains blood
Receive some CSF
Examples of Dural Venous Sinuses
Superior Sagittal Sinus
Inferior Sagittal Sinus
Transverse Sinus
Superior Sagittal Sinus
Superior Border of Falx Cerebri
Inferior Sagittal Sinus
Inferior Border of Falx Cerebri
Transverse Sinus
Courses laterally with the tentorium cerebelli
What is the Arachnoid Mater
The middle layer of The Cranial Meninges